What is CVE-2026-58095?

CVE-2026-58095 is a critical-severity vulnerability in FreeBSD, classified under Heap-based Buffer Overflow. CVSS score: 9.8/10. Published 2026-08-26.

How severe is CVE-2026-58095?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in FreeBSD

CVE-2026-58095

mp_Enddisc() used incorrect length calculations when formatting endpoint discriminator addresses for display, allowing a received endpoint option to overflow a global result buffer. A malicious PPP peer can crash ppp(8) or potentially execute arbitrary code as root.

Vulnerability class: Buffer Overflow

EPSS: 0.003 (20.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Freebsd

Weakness classification (CWE)

CWE-122 — Heap-based Buffer Overflow

References

secteam@freebsd.org (vendor-advisory)

Frequently asked questions

What is CVE-2026-58095?: CVE-2026-58095 is a critical-severity vulnerability in FreeBSD, classified under Heap-based Buffer Overflow. CVSS score: 9.8/10. Published 2026-08-26.
How severe is CVE-2026-58095?: Critical severity. CVSS v3 base score is 9.8 out of 10.